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KAOLIN
Pharmaceutical USP/BC Grade Colloidal Clay
Pharmaceutical Grade - Kaolin, USP is used as an internal absorbent, diluents, filler and pacifier in pharmaceutical preparations. It is widely used in creams and lotions as a suspending agent and pacifier. In veterinary applications, it functions as a topical and G.I. absorbent and as a component of poultices.
Typical Physical Properties:
Grade USP/BC-Pharmaceutical / Medicinal Grade
Median Particle Size (microns) 1.79
Dry Brightness 87.5 - 89
Specific Gravity 2.60
Tapped Bulk Density (pcf) 15 - 25
Loose Bulk Density (pcf) 10 - 20
Loss on Ignition (% max.) 15
Oil Absorption 42
Chemical Properties:
SiO2 - Silicon Dioxide (%) 43.00 - 47.00
Al2O3 - Aluminum Oxide (%) 36.00 - 40.00
CaO - Calcium Oxide (%) 0.04 - 0.08
MgO - Magnesium Oxide (%) 0.20 - 0.40
Fe2O3 - Ferric Oxide (%) 0.20 - 0.40
TiO2 - Titanium Dioxide (%) 1.20 - 2.20
Moisture (% max.) 1.0 - 0.0
Pb - Lead (max. ppm) 10.00
CO2 - Carbonate (%) None
Water Soluble Iron (%) Trace
Water Solubles (%) None
Acid Solubles (% max.) 2.0
Organic Volatile Impurities Meets Requirements
Loss on Ignition (%) 15.00
pH Value (10% slurry) 6.7 – 7.7
Identification Positive Test for Aluminum
Other Kaolin Clay Grades Available:
Food Grade - Kaolin is use as an anti-caking agent for solids and as a clarifying agent for liquids during food processing.
Cosmetics - Kaolin is used as an extender and suspending agent in a variety of cosmetic preparations. It is used in lotions, creams, powders and color cosmetics.
Other Grades- These Kaolins are used in a wide variety of applications as fillers and extenders where high purity is required.
